Coming back from a Peru trip that among other things included staying in a lodge off the grid I was often reminded of how the E-M1 sucks at being off the grid. I brought five batteries (four OEM, one third party) and whenever I had grid access I needed to make sure I recharged all batteries (the batteries in my FL-50 also died at the beginning on a night trip, ARGH!) before it was time to go. I brought two OEM chargers but often had trouble finding two power outlets. I guess one way to remedy it is to bring loads of batteries, which somewhat defeats the purpose of having a small camera. Me, I'd rather find a solution for charging off-grid. Solar is nice, but often just being able to charge batteries in the car, or from a huge battery would do, and anyway many things can give 12v DC. Also, we all know that 5v-ish USB won't do much to a 7.6v BLN-1, which rules out a number of small usb-only chargers that seem neat and cheap. I did bring a Hähnel Unipal plus, which actually turned out better than nothing, but keeping the contact pins in contact with the battery proved a challenge on bumpy roads. Also, it only charges to 7.4 v, so the BLN-1 never charges fully. I'm mostly interested in anything that can give the OEM battery a good charge. I have considered the Voltaic BLN-1 cradle, because it likely works well with their solar panels and battery packs. Then there's things like the Watson dual charger, which charges two batteries at once and from the same power outlet, but it seems bulkier than two single chargers. According to the reviews it's another charger that doesn't give the battery a full charge. There seems to be tons of other chargers, but they often sell together with some 3rd party batteries, which makes me suspect that they might not do a very good job with the OEM battery. Have you tried any of these options?